Hello!
First of all I want to say that this kit seems really impressive! It looks like a lot of work has been put into it 
I am currently working at a multiplayer side scroller shooter in Unity, and only recently stumbled upon this kit (I wish knew about it when we started…). We are investigating a switch to Unreal for the better multiplayer support, but none of us have any experience with this engine, just a bit of toying around, so i apologize if I don’t use the correct terminology or I’m not aware of basic features. I know that Unreal has some multiplayer features by default (syncing actors, game modes etc), do your actors sync over the network? If not, how hard would it be to add that (sync player transform, animations, stats, shooting, sync AIs, destructables etc)? Also, if we want to write some parts in C++, will we be able to use features implemented in blueprints?